晶體取向 的英文怎麼說
中文拼音 [jīngtǐqǔxiàng]
晶體取向
英文
crystal organization-
3 ) in shell of hyriopsis cumingii ( lea ), the prismatic layers and the nacreous layers are all composed of aragonite minerals, and aragonite crystallites in prismatic layers show obviously preferential orientation of [ 012 ] axis perpendicular to the shell layers, so it is considered that the orientation of aragonite crystallites in prismatic layers perhaps play an important role in deciding the orientation of aragonite crystallites in nacre and acts as one of template to resulting the formation of aragonite with [ 012 ] orientation perpendicular to nacreous layers in nacre
3 ）與海水貝殼明顯不同的是，三角帆蚌稜柱層礦物相與珍珠層一樣皆為文石相，同時查明稜柱層中文石晶體具[ 012 ]軸垂直殼層面的明顯的擇優取向。本文認為，三角帆蚌稜柱層中文石晶體的擇優取向可能對珍珠層中文石晶體的擇優取向存在模板導向的作用，導致珍珠層[ 012 ]定向的文石晶體的形成。Not only general suitability of this method is independent of gratings model, geometry structure, medium properly and crystal axis orientation ( including uniaxial crystals and biaxial ones ), but also physical concepts are clear and formula is concise
該方法不僅不受光柵模型、幾何結構、介質性質和晶體取向（包括單軸和雙軸晶體）的影響而具有普遍適用性，而且其物理概念清晰、公式簡潔。The quality of buffer layer and thin films was analyzed by afm, xrd, rheed and xps respectively. the effect of the experimental parameters such as carbonization time, working pressure, c source gas flow rate, carbonization temperature, different carbonization gas and substrate on the carbonization process was studied firstly. it was observed that the size of particles was increased with the increase of carbonization time and the rms was opposite, but the trend was reduced while the carbonization time was long enough ; the size of particles was increased with the increase of working pressure too, and choosing a proper working pressure could get a smooth surface ; the size of particles was unobviously changed while the gas flow rate was low, but it was notability increased with the increase of gas flow rate while the gas flow rate was high enough, and a smooth surface could be also obtained by choosing a proper gas flow rate ; with the increase of carbonization temperature, the size of particles was increased, the rms is decreased and a good single - crystalline carbonization layer could be obtained, but a rough surface was formed at a excessive high temperature ; the rms of
對于碳化工藝，側重研究了碳化時間、反應室氣壓、 c源氣體的流量、碳化溫度以及不同種類的c源氣體、基片取向等因素對碳化層質量的影響，研究結果表明:隨著碳化時間的增長，碳化層的晶粒尺寸隨之變大，表面粗糙度隨之降低，但當碳化到一定時間之後，碳化反應減緩，碳化層的晶粒尺寸以及表面粗糙度的變化幅度變小;碳化層的晶粒尺寸隨反應室氣壓的升高而變大，適中的反應室氣壓可得到表面比較平整的碳化層;在c源氣體的流量相對較小時，碳化層的晶粒尺寸隨氣體流量的變化不明顯，但當氣體流量增大到一定程度時，碳化層的晶粒尺寸隨氣體流量的增大而明顯變大，同時，適中的氣體流量得到的碳化層表面粗糙度較低;碳化溫度較低時，碳化層的晶粒取向不明顯，隨著碳化溫度的升高，碳化層的晶粒尺寸明顯變大，且有微弱的單晶取向出現，但取向較差，同時，適中的碳化溫度可得到表面平整的碳化層;相比于c _ 2h _ 2 ，以ch _ 4作為c源氣體時得到的碳化層表面平整得多;比起si （ 100 ） ，選用si （ 111 ）作為基片生長的碳化層的晶粒取向一致性明顯更好。A patch antenna with etched holes on the ground plane is also studied. the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment. the results show that the surface waves are suppressed greatly, the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane
全面地研究了地面腐蝕周期圓孔結構的電磁晶體貼片天線在基波頻率處的性能，用fdtd方法並結合pml邊界處理技術對該天線所取得的研究結果顯示，本文設計的地面腐蝕型電磁晶體結構抑制了貼片天線中的表面波，增加了天線的帶寬，並有效地削弱了旁瓣，使天線的e面方向圖上110和260方向的兩個旁瓣被削弱了10db 。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。All my samples with good orientation are prepared by rf sputtering. then we invest surface morphology and crystal structure, optical and electrical properties of zno films by afm, xrd, hall testing, ultraviolet - visible spectrum photometer and xps et al. zno films are fabricated on gaas substrate
本文用射頻反應磁控濺射制備了高度c軸擇優取向的zno薄膜，採用原子力顯微鏡（ afm ） 、 x射線（ xrd ） 、 hall測試儀、紫外?可見分光光度計和x光電子能譜等分析測試手段，研究了樣品的表面形貌、晶體結構、光學和電學性能等。Growth rates of between 0. 25 and 1. 3μm/min were reported with the c axis of hexagonal zno grown on(0112)-oriented al2o3 lying in the plane of the film。
據報道，在（0112）取向的Al2O3襯底上生長C軸位於薄膜平面上的六角晶體ZnO的情形中，其生長速率在025mmin和13mmin之間。Presents the microstructure evolution in aluminum a nd copper after deformation by cold rolling in the strain range of 10 to 50 % red uction using tem and points out three types of dislocation structures are typica l and two of them are common for both materials and these two common types are f ound in non - cube grains and can be distinguished by crystallographic orientatio n of dislocation boundaries in the grains and the third type of structure is obs erved in cube grains, and concludes that grain orientation is important in deter mining the structure type but some other metallurgical parameters also have a ro le to play
採用tem對冷軋多晶銅與多晶鋁的形變顯微組織演變進行了對比研究.結果發現：多晶銅及多晶鋁形變顯微組織中均含有三類典型的位錯結構類型，其中的兩種結構特徵在兩種材料中是相似的，這兩種類型結構存在於非立方取向晶粒，可通過晶粒中位錯邊界的晶體學取向加以區別，另一類型結構存在於立方取向晶粒；晶粒的晶體學取向決定了其形變顯微組織類型，但其它冶金學因素對顯微組織也有影響In this paper, we prepared 110x80mm ti : al2o3 crystal ( 11 stone ) by directional temperature gradient technique ( dtgt ), choosed its top, middle part and bottom, and fabricated powder samples with carnelian mortar. then we observed and analyzed the surface of ti stone by using sem, and found it is ti that is the main component of the black thing on the surface of ti stone
本文採用導向溫度梯度法制備了110 80mmti ： al _ 2o _ 3晶體（鈦寶石） ，並取其上部、中部、下部用瑪瑙研缽製成粉末樣品，用掃描電子顯微鏡對鈦寶石表面進行了觀察分析，結果表明鈦寶石表面上的黑色物質的主要成分為鈦。Through the research on the crystallite of the composites modified with silicone coupling agent and pp - g - mah, research showed that the size of the crystallite and oriented crystallization had obviously influence on the mechanical performances. the sem results showed that nano - sio2 was dispersed well in pp, which promoted the matrix undergo shear yielding rather than brittle fracture
通過對硅烷偶聯劑?馬來酸酐接枝聚丙烯共聚物作為界面改性劑改性pp微晶的研究，表明微晶尺寸變化與復合材料的力學性能有關；在界面附近形成擇優取向的結晶層，促使基體發生屈服變形，提高了復合材料的韌性。A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )
設計了一種基底鉆周期圓孔結構的電磁（光子）晶體貼片天線，用fdtd方法並結合pml吸收邊界條件對該天線進行了研究，結果表明本文所設計的基底鉆孔型電磁晶體貼片天線取得了多方面的性能改善，與普通天線相比，基底中的表面波受到很大抑制，天線的帶寬增加，遠場方向圖上天線的旁瓣和背瓣被明顯削弱，向前輻射的增益由原來的12db增加到26db ，增加了14db ，比文獻上報道的gonzalo等人的研究結果提高了4db 。Compared with the conventional chemical etching, laser assisted wet chemical etching can eliminate the effect of crystal orientation efficiently and fabricate more diversified etched pattern ; compared with the laser assisted gas chemical etching, the required condition for laser wet etching can be realized more easily and the operation can be simplified ; compared with the ion etching, it has advantages of no ion damage to substrate, avoiding over - etching and cost - effective
半導體的激光誘導液相腐蝕與普通化學腐蝕相比，可以有效地消除晶體取向影響，製作出更加多樣化的腐蝕圖形;與激光誘導氣相腐蝕相比，其工藝條件更加容易實現，操作更加簡單;與干法離子刻蝕相比，對基片無離子損傷，過度腐蝕容易控制，成本低。Moreover, we should find ways to calibrate the thickness and orientations of the birefringent crystals precisely
另外，必須找到精確測量晶體厚度和角度取向的方法。Otherwise we also invest the effect of different parameters such as substrate temperature and o2 / ar ratio on zno film while growing, when the films fabricated at 600 and o2 : ar ratio equal to 1 : 2, the best quality films can be obtained
在linbo3襯底上生長zno薄膜過程中，分析了襯底溫度和氧氣與氬氣含量對薄膜質量的影響。實驗表明在的襯底為600和o2 : ar為2 : 1時生長的zno薄膜擇優取向強，晶體性能好。The gel c - s - h has the trend to crystallizing and transforming into low crystallized hydrates, which were similar to tobermorite. the incorporation of mineral mixtures improves greatly the orientation of ch either in interface zone or matrix zone and the crystal sizes also become small
由於礦物摻合料的晶核作用、填充密實和二次水化作用，明顯改善了界面過渡區和基體中ch的擇優取向，並且不論是在界面區還是基體中，結晶相的晶粒尺寸都發生了明顯的細化。The metastable austenitic phase of s s fiber at the interface of the fiber / cu composite would turn back to equilibrium with the interfacial energy and inter stain inducing, when the cu films were separated from s s fiber. so the magnetism value of the s s fiber declined. the information of grain - orientation at the interface of the fiber / cu composite can serve as a mechanism responsible for its declining coercivity, and a part of cu elements diffused into s s fibers
不銹鋼纖維銅復合體去除銅層后，原有的界面能及應力下降，使得原纖維界面處弱磁性的部分亞穩奧氏體，恢復到平衡態，它們對樣品s測試結果不再有貢獻；不銹鋼纖維銅復合體中，處于界面處的纖維晶粒具有很強的軸向取向排列，當晶粒取向性減弱，磁疇轉動的阻力增加，磁體的矯頑力上升。Standard test method for determining the orientation of a metal crystal
測定金屬晶體取向的標準試驗方法Growth orientation of poly - si film by hot - wire chemical vapor deposition
熱絲法制備多晶硅薄膜晶體取向及形態的研究Relationship between x - ray two - dimensional diffraction data and crystal orientation distribution function
射線二維衍射數據與晶體取向分佈函數的關系研究The transmission spectra and reflectance spectra of the pc shift systematically with the spheres size, providing evidence of photonic crystal effects. photoluminescence measurements show efficient emission of the zno photonic crystals in the uv as well as a defect emission band at longer wavelength
利用透射光譜及反射光譜研究了影響zno光子晶體的光子禁帶的工藝參數;利用x射線衍射儀分析了zno光子晶體的結晶和取向性能;利用熒光分光光度計，研究了不同前處理溫度下的zno光子晶體的光致發光譜。分享友人